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Single Family ResidenceResidential
$4,071,749$667 / ft²
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 88How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Sep 24, 2026
Last sold for $1,500,000 on Jul 19, 2023

355 FLAGG CT

HINSDALE, IL 60521
6.5
Baths
6,103 ft²
Living AreaTotal finished area of the structures, from county records. Some counties include shared space like hallways or a building gym, so it may not match a listing.
0.35 ac
Lot SizeThe size of the land the home sits on, from county records.
2001
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
3
ParkingThe number of parking spaces on the property, including the garage.

Valuation

$4.1M
$3.6M low$4.6M high
Last SaleThe most recent sale price and date from the recorded deed. Transfers between family members or companies may not reflect market value.$1,500,000 · Jul 19, 2023

Tax & Assessment

Property TaxThe property tax billed for this tax year. It usually pays for schools, roads, and local services.$28,539 (2025)
Assessed ValueThe value the county assigns to this home to calculate property tax. It is often lower than what the home would sell for.$584,814 (2025)
Assessed LandThe share of the county's assessed value that comes from the land itself, not the buildings.$185,955
Assessed ImprovementsThe share of the county's assessed value that comes from the buildings and other structures on the land.$398,859
Previous AssessedThe county's assessed value from the year before, useful for seeing how the assessment changed.$541,996
Assessor Market ValueThe county assessor's own opinion of market value. It is separate from our estimate and updates on the county's schedule.$1,754,442

Climate Risk

Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.24 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal

Scores 0–100; higher = greater projected risk.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Single Family Residence
CountyDUPAGE
Lot (acres)The size of the land the home sits on, from county records.0.35
ConstructionThe main material the home's frame and walls are built from.Frame (Unspecified)
CoolingThe type of cooling or air conditioning in the home.Central
FireplaceWhether the home has a fireplace, and what kind.Yes
PoolWhether the property has a pool, and what kind, such as in-ground.No

Transaction History(2)

Sales and refinances filed with the county for this home. Not every transfer is a normal sale, so check the type before comparing prices.

Foreclosure Filings(4)

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

E
The Lane Elementary SchoolA
Elementary · Grades KG–5 · 0.3 mi
M
Hinsdale Middle SchoolB+
Middle · Grades 6–8 · 0.6 mi
H
Hinsdale Central High SchoolA
High · Grades 9–12 · 1.5 mi

District: Hinsdale Township High School District 86

Neighborhood · ZIP 60521These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.43
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.121
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.48

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.1.6%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.5%
PopulationHow many people live in this area.17,211
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,597 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$235,781
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$359,560
Average tempThe average temperature here across a full year.49°F
Annual precipHow much rain and melted snow falls here in a typical year.38 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.54%

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Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

How this home compares

355 Flagg Ct measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Among the most valuable homes in DuPage County
  • Among the highest price per square foot in DuPage County
  • Among the largest homes in DuPage County
  • Has a bigger lot than 71% of homes in DuPage County
  • Newer than 90% of homes in DuPage County

What homes are worth in Hinsdale 60521

Each bar is how many homes fall in that price range. The marker is this home.

This home
$307K$4.8M

This home is worth more than 97% of homes in Hinsdale 60521.

How it measures up in Hinsdale 60521

The dot is this home. The mark in the middle is the typical home in Hinsdale 60521.

Estimated value$4,071,749
CheaperTypical $1,234,795Pricier

Pricier than 97% of homes nearby

Price per ft²$667
CheaperTypical $430Pricier

Pricier than 93% of homes nearby

Living area6,103 ft²
SmallerTypical 2,870 ft²Bigger

Bigger than 96% of homes nearby

Lot size0.35 ac
SmallerTypical 0.26 acBigger

Bigger than 65% of homes nearby

Year built2001
OlderTypical 1978Newer

Newer than 77% of homes nearby

How 355 Flagg Ct ranks against every home in each area.
MeasureThis homeHinsdale 60521DuPage County
Estimated valuepricier than$4,071,74997% of homesalmost all homes
Price per ft²pricier than$66793% of homesalmost all homes
Living areabigger than6,103 ft²96% of homesalmost all homes
Lot sizebigger than0.35 ac65% of homes71% of homes
Year builtnewer than200177% of homes90% of homes

About 355 Flagg Ct

How much is 355 Flagg Ct, Hinsdale, IL worth?

The TopHap Estimate for 355 Flagg Ct, Hinsdale, IL is $4,071,749 as of Sep 24, 2026. The likely range is $3,567,347 to $4,576,151. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 355 Flagg Ct, Hinsdale, IL last sell?

355 Flagg Ct, Hinsdale, IL last sold on Jul 19, 2023 for $1,500,000, according to the county's recorded deed.

How big is 355 Flagg Ct, Hinsdale, IL?

355 Flagg Ct, Hinsdale, IL has 6.5 bathrooms, 6,103 square feet of living space and a 0.35-acre lot.

When was 355 Flagg Ct, Hinsdale, IL built?

355 Flagg Ct, Hinsdale, IL was built in 2001, making it 25 years old. The building has 2 stories.

What schools serve 355 Flagg Ct, Hinsdale, IL?

355 Flagg Ct, Hinsdale, IL is assigned to The Lane Elementary School (elementary), rated A; Hinsdale Middle School (middle), rated B+; Hinsdale Central High School (high), rated A. All sit in Hinsdale Township High School District 86. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 355 Flagg Ct, Hinsdale, IL compare to other homes in Hinsdale 60521?

Among the 6,715 homes in Hinsdale 60521, it is worth more than 97% of them ($4,071,749 against a typical $1,234,795), its price per square foot is higher than 93% of them ($667 against a typical $430), it is bigger than 96% of them (6,103 ft² against a typical 2,870 ft²), its lot is bigger than 65% of them (0.35 ac against a typical 0.26 ac) and it is newer than 77% of them (2001 against a typical 1978). Measured against all of DuPage County, it is worth more than almost all homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

What are the property taxes on 355 Flagg Ct, Hinsdale, IL?

The 2025 property tax bill for 355 Flagg Ct, Hinsdale, IL was $28,539. The county assessed it at $584,814.

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